75kVA Oil Immersed Three Phase Distribution Transformer 35kV ONAN

Key Selling Points of Three-Phase American-Style Pad-Type Transformers
1. Compact Structure, High Integration, and Space-Saving
"One-Pack Design": High-voltage load switches, backup fuses, plug-in fuses, the transformer, and the low-voltage distribution system are all integrated into a single, sealed oil tank.

Small Footprint: Due to its highly integrated design, it is significantly smaller than traditional civil substations or European-style box-type transformers, making it ideal for land-constrained areas such as cities and residential areas.

Aesthetic Appearance: Typically resembling a large green mailbox, it blends seamlessly into its surroundings, minimizing its impact on the cityscape.

2. Fully Sealed, Fully Insulated, and Safe and Reliable
High Protection Rating (IP67 and above): All live parts are immersed in insulating oil, shielded from air, preventing short circuits and ground faults caused by moisture, contamination, and foreign objects.

Maintenance-Free: The fully sealed structure virtually eliminates external maintenance (such as cleaning insulators and preventing condensation), and the high-voltage components require no maintenance.

Operational Safety: External parts accessible to personnel are insulated, greatly improving operational safety.

3. Highly Reliable Power Supply
Powerful Protection Functions:

Plug-in fuses: Protect against transformer faults (such as inter-turn short circuits).

Backup fuses: Isolate short-circuit faults on the high-voltage side.

Load switch: Enables on-load opening and closing, enabling switching operations in the distribution network.

Ring network power supply capability: The high-voltage side typically utilizes a two-port (incoming and feeder) or four-port (ring network unit) design, making it easy to configure a ring network power supply system and improving power supply reliability.

4. Economical and Low Overall Cost
Low Initial Investment: Compared to building a distribution room or using other types of box-type transformers, the procurement and installation costs of the US transformer are lower.

Easy Installation and Short Installation: It comes complete when shipped from the factory. Only foundation construction, hoisting, wiring, and commissioning are required before it can be put into operation, significantly reducing construction and power outage time.

Low Operation and Maintenance Costs: Due to its maintenance-free nature, the transformer saves significant manual inspection and maintenance costs in the long term.

5. Flexibility and Scalability
Plug-and-Play: It can be used as a mobile substation, offering significant advantages for temporary power needs and emergency power supply (such as for large-scale events and construction sites). It can be relocated at any time after use.

Flexible Solutions: The number of outgoing circuits and protection functions (such as circuit breakers and meters) on the low-voltage side can be flexibly configured according to user needs.

6. Energy Saving and Environmental Protection
Low Loss: Utilizing high-quality silicon steel sheets and advanced manufacturing processes, the transformer exhibits low no-load and load losses, aligning with energy conservation trends.

Low Noise: The damping effect of the oil tank and oil effectively suppresses vibration in the core and windings, resulting in low operating noise.

Excellent Oil-Immersed Heat Dissipation: Using insulating oil as the cooling medium, the transformer achieves high heat dissipation efficiency, ensuring the transformer's overload capacity and service life.